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数学
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函数y=2/x的单调减区间为?
人气:124 ℃ 时间:2019-10-24 20:29:20
解答
画图- -你就知道了.这些也要来问么?
答案是第一和第三区间.
或者(负无穷~0)并(0~正无穷)
反正就是整个区间去掉0.
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